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API SPEC 5L-2011���ܾ���Ҏ������������ʯ�͌W�����Ʋ��l���������������ͨ����ԓ����Ҫ���|��L245��L290��L360��L415��L480��GR.B��X42��X46��X56��X65��X70��X80��X100��䓼���[1]
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����GB/T9711.1�ܾ� 䓹�����Ҫ��IJ�ͬ������ػ�ضȵIJ�ͬ���Ɍ��ػ�֞����N�� ��һ���͜ػػ�150��250�ȣ�
�͜ػػ����ýM����ػ��R���w����Ŀ�����ڱ��ִ��䓵ĸ�Ӳ�Ⱥ���ĥ�Ե�ǰ���������������ȑ����ʹ���������ʹ�Õr���ѻ��^��p�ġ�����Ҫ���ڸ��N��̼�������о���������GB/T9711.1�ܾ�䓹����L���S���Լ��B̼�������ػ��Ӳ��һ���HRC58��64��
�������Мػػ�250��500�ȣ�
�Мػػ����ýM����ػ������w����Ŀ���ǫ@�øߵ��������������ԘO���^�ߵ��g�������������Ҫ���ڸ��NGB/T9711.1�ܾ�䓹ܺ͟���ģ�ߵ�̎�����ػ��Ӳ��һ���HRC35��50��
�������ߜػػ�500��650�ȣ�
�ߜػػ����ýM����ػ������w�����T�ό����Ӹߜػػ���Y�ϵğ�̎���Q���{�|̎������Ŀ���ǫ@�Ï�����Ӳ�Ⱥ��������g�Զ��^�õľC�ϙCе���ܡ���ˣ��V��������܇��GB/T9711.1�ܾ�䓹����C���ȵ���Ҫ�Y����������B�U����˨���X݆���S��ػ��Ӳ��һ���HB200��330��
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|
Standard |
Product Level |
Steel grade |
Yield Strength (min), Mpa |
Tensile Strength��MPa�� |
|
API 5L GB/T9711.2 |
PSL 1 |
A or L210 |
210 |
335 |
|
B or L245 |
245 |
415 |
|
x42 or L290 |
290 |
415 |
|
X46 or L320 |
320 |
435 |
|
X52 or L360 |
360 |
460 |
|
X56 or L390 |
390 |
490 |
|
X60 or L415 |
415 |
520 |
|
X70 |
483 |
565 |
|
PSL 2 |
BR or L245R |
245~450 |
415~760 |
|
X42R or L290R |
290~495 |
415~760 |
|
BN or L245N |
245~450 |
415~760 |
|
X42N or L290N |
290~495 |
415~760 |
|
X46N or L320N |
320~525 |
435~760 |
|
X52N or L360N |
360~530 |
460~760 |
|
X56N or L390N |
390~545 |
490~760 |
|
X60N or L415N |
415~565 |
520~760 |
|
X65N or L450N |
425~566 |
525~760 |
|
X70 or L480 |
484~565 |
565~768 |
|
X80 |
552~690 |
621~827 |
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|
roduct Level |
Steel grade |
Chemical composition, % |
|
C |
Mn |
P |
S |
Si |
V |
Nb |
Ti |
CEpcm |
|
PSL 1 |
B or L245 |
��0.28 |
��1.20 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
x42 or L290 |
��0.28 |
��1.30 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
X46 or L320 |
��0.28 |
��1.40 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
X52 or L360 |
��0.28 |
��1.40 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
X56 or L390 |
��0.28 |
��1.40 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
X60 or L415 |
��0.28 |
��1.40 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
X70 |
��0.28 |
��1.40 |
��0.030 |
��0.030 |
- |
- |
- |
- |
- |
|
PSL 2 |
BR or L245R |
��0.24 |
��1.20 |
��0.025 |
��0.015 |
��0.40 |
c |
c |
��0.04 |
��0.25 | | 
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